Oil & Gas
| Thu 17 Sep 2026
Beijing, Sept. 17 -- PetroChina has sought patent for Mechanical Setting Packer. This invention was developed by Li Zhiguang, Wang Wentao, Shu Chang, Zhang Xiumei, Hu Jintong, Wang Shuo, Fan Linlin, Wei Haiju, Han Zenghui and Yang Tiancheng.
The patent application number is CN202411902147 20241223. The patent publication number..